The figures now stand at 317 alleged victims and 212 suspected perpetrators over a period spanning 70 years.

Most of the cases date from the 1960s to the 1990s.

The number of victims has tripled in the three weeks since the scandal first emerged as more people come forward reporting abuse.

The scale of the alleged abuse was revealed after Scouting Ireland met gardaí and Tusla, the child and family agency, to provide an interim update on child safeguarding expert Ian Elliot's investigation into historical cases.

The allegations relate to former organisations the Catholic Boy Scouts of Ireland (CBSI) and the Scouting Association of Ireland (SAI).

A Scouting Ireland statement last night said: "Young people in the care of these organisations were abused, sexually and physically. The alleged perpetrators were at all levels within the organisations.

"There is evidence of alleged perpetrators being moved within scout groups."

The statement added: "The stories emerging are difficult for those telling them.

"We are deeply sorry that anyone who would have expected to be safe in these organisations were not."

It sought to assure those who have come forward that Scouting Ireland is taking all allegations seriously.

Scouting Ireland, which was founded in 2004, said it "inherited this situation and is now dealing with its consequences".

It said it is working closely with gardaí and Tusla to ensure all complaints against alleged perpetrators who are still living are investigated thoroughly and "appropriate action taken as necessary".

The statement said gardaí have full access to all information held by Scouting Ireland.

Scouting Ireland said the organisation recognises the trauma suffered by the alleged victims and is providing counselling support for those who wish to receive it.

Emergency financial measures are being considered by the organisation to provide resources and support.

Scouting Ireland has revised its policies and procedures on the advice of Mr Elliot to strengthen safeguarding.

"The safeguarding of children and adults is the number one priority of the board and the executive team," it said.

Safer

"We thank those who have come forward and shared information with us.

"It means we can take action and become a stronger and safer organisation as a result."

Ms Zappone said the increase in the number of alleged victims and perpetrators "once again underline the serious challenges facing Scouting Ireland".

She predicted the numbers coming forward will increase and said: "Supporting victims is my top priority."